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US2570523A
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Assignee: Individual
•
Filing: 1947-07-25
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Granted: 1951-10-09
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Expires: 1967-07-25
Abstract
No abstract record available.
Inventors
- 👤 Clerk Edouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453; E06B2003/4492
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US872434A
Cited
US1211914A
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US1681134A
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US1673393A
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US1959643A
Cited
US2304063A
Cited
US2367129A
Cited
US2317581A
Cited
US2375553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |